From cfb795ad383f69e60d5fbdcd4283aa2145056827 Mon Sep 17 00:00:00 2001
From: Guillaume Pellerin <yomguy@parisson.com>
Date: Thu, 31 Oct 2013 10:14:37 +0100
Subject: [PATCH] add a UUID based on a 32 bit hash for each processor

---
 timeside/api.py                          | 5 +++++
 timeside/core.py                         | 8 ++++++++
 timeside/grapher/waveform_transparent.py | 1 +
 3 files changed, 14 insertions(+)

diff --git a/timeside/api.py b/timeside/api.py
index ad2b374..8f53cd4 100644
--- a/timeside/api.py
+++ b/timeside/api.py
@@ -96,6 +96,11 @@ class IProcessor(Interface):
         duration
         """
 
+    @staticmethod
+    def uuid():
+        """Return the UUID of the processor"""
+
+
 class IEncoder(IProcessor):
     """Encoder driver interface. Each encoder is expected to support a specific
     format."""
diff --git a/timeside/core.py b/timeside/core.py
index 06323cb..d477ca4 100644
--- a/timeside/core.py
+++ b/timeside/core.py
@@ -24,6 +24,7 @@ from timeside.exceptions import Error, ApiError
 import re
 import time
 import numpy
+import random
 
 __all__ = ['Processor', 'MetaProcessor', 'implements', 'abstract',
            'interfacedoc', 'processors', 'get_processor', 'ProcessPipe',
@@ -68,6 +69,9 @@ class Processor(Component):
     abstract()
     implements(IProcessor)
 
+    def __init__(self):
+        self.UUID = "%08x" % random.getrandbits(32)
+
     @interfacedoc
     def setup(self, channels=None, samplerate=None, blocksize=None,
               totalframes=None):
@@ -123,6 +127,10 @@ class Processor(Component):
     def mediainfo(self):
         return self.source_mediainfo
 
+    @interfacedoc
+    def uuid(self):
+        return self.UUID
+
     def __del__(self):
         self.release()
 
diff --git a/timeside/grapher/waveform_transparent.py b/timeside/grapher/waveform_transparent.py
index 3fd21a3..0e5b246 100644
--- a/timeside/grapher/waveform_transparent.py
+++ b/timeside/grapher/waveform_transparent.py
@@ -24,6 +24,7 @@ from timeside.api import IGrapher
 from timeside.grapher.core import *
 from timeside.grapher.waveform_simple import Waveform
 
+
 class WaveformTransparent(Waveform):
     """ Builds a PIL image representing a waveform of the audio stream.
     Adds pixels iteratively thanks to the adapter providing fixed size frame buffers.
-- 
2.39.5